Clinical trials

This is a Phase II treatment study analyzing the role of preoperative chemotherapy, preoperative laparoscopic HIPEC, and gastrectomy with CRS/HIPEC in gastric adenocarcinoma patients with cytology-positive only carcinomatosis, radiologically-occult carcinomatosis, or radiology apparent peritoneal-surface only metastatic disease.

The Alzheimer's Prevention Registry (www.endALZnow.org) will collect contact and demographic information on individuals. The objective is to provide information the latest news and advances in Alzheimer's prevention research, and to inform enrollees about research studies in their community. Enrolled individuals will receive regular email communications. As research studies become available, individuals will be notified via email with information as to how proceed should they be interested. Registry enrollees are under no obligation to participate in a research study. Study opportunities may include surveys, healthy lifestyle interventions (e.g., diet, exercise), memory \& thinking tests, brain scans, and investigational drug trials. To join the Registry, please visit www.endALZnow.org

The study will be conducted in 2 blinded parts (Part 1 and Part 2). In Part 1, study participants who are mutation carriers will receive active donanemab and non-mutation carriers will receive placebo-donanemab for up to 18 months (76 weeks), with a minimum treatment period of 9 months. Amyloid PET scans will be conducted at screening, 9, and 18 months in Part 1. Participants who are at or below 11 CL at screening or reach complete amyloid plaque clearance as measured by florbetapir F18 PET (defined as ≤11 CL) at 9 months will initiate Part 2. Participants who are ≤11 CL at screening may delay their entry into Part 2 for up to 6 months at the discretion of the Investigator. All remaining participants will start Part 2 after completing 18 months (76 weeks) in Part 1 independent of amyloid results. Non-carriers will receive placebo in both Parts 1 and 2. In Part 2, study participants who are mutation carriers will be randomized 1:1:1:1 in a full factorial design to receive either RG6289 + placebo-donanemab (RG6289 alone group), donanemab + placebo-RG6289 (donanemab alone group), the combination of RG6289 and donanemab (combination group), or placebo-RG6289 and placebo-donanemab (placebo group). All non-carriers will be assigned to the placebo group. CDR-GS at the end of Part 1 and the amyloid level using the last completed amyloid PET scan in Part 1 will be used for stratification. All study participants will participate in a double-dummy design for the duration of Part 2 receiving both an intravenous (IV) infusion at the required interval for the donanemab or matching placebo as well as a daily oral treatment of RG6289 or matching placebo. An exploratory outcome of Part 1 is a comparison of the amyloid clearance between this ADAD cohort and historical controls using propensity score matching. The primary outcome in Part 2 is change from the start of Part 2 through the end of Part 2 in brain amyloid load in PSEN1 E280A mutation carriers as measured by amyloid PET imaging. Other endpoints will include fluid and imaging biomarkers and measures of cognition and functioning. The maximum study duration for any individual participant will be 3 years, not including the screening or follow-up periods

The Arizona Alzheimer's Disease Research Center (ADRC) is the National Institute on Aging's (NIA's) first statewide AD Center (ADC), the only ADC in the Southwestern United States, and a leading example of statewide collaboration in biomedical research. It capitalizes on Arizona's strengths in brain imaging, genomics, computer science and biomathematics, the basic, cognitive and behavioral neurosciences, clinical, and neuropathological studies of AD, the discovery and evaluation of investigational treatments, and the study of normal cognitive aging.